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Does this look like it might do the job?
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Possibly, but try the voltage measurement first.
The QD output (pin 7) should be producing a 50/50 square wave. If you put a voltmeter on that signal, the meter will be too slow to react to the DC voltage changing between 0V and 5V a million times a second, so what it will do instead is show the average voltage, around 2.5V.
If you see 2.5V on that pin, that will be telling us that the pin is actually outputting a 50/50 waveform. If you see 0V or 5V, it isn't. While you are at it look at the DC voltages on UG5 Pins 2, 3 and 6, which we know definitely are producing 50/50 waveforms.